fix(export): 内联 PDF 字体并清理历史记录

docs/development/Export开发说明.md

@@ -8,6 +8,8 @@ Export Service 把笔记或未保存的 Markdown 文本渲染为可下载的 HTM
 
 桌面端的 `core_request` 保持浏览器 Fetch 语义：JSON 响应以 UTF-8 文本传递，HTML、PDF、DOCX 等下载响应以 Base64 穿过 Tauri IPC，并在前端还原为带正确 `Content-Type` 的 `Response`。Host 将单次响应限制为 64 MiB，防止异常产物耗尽 WebView 内存。
 
+生产构建将 PDF 打印所需的 WOFF2 字体内联到 CSS，并在快照中去除同字体的 WOFF/TTF 回退源，使 Tauri 资源协议不参与字体读取。导出弹窗只保留本次打开期间创建或接回的活动任务；关闭后再次打开会清除已完成、失败和取消的历史显示，仍在后台运行的任务会继续显示直到结束。
+
 ## 模块布局
 
 ```text

frontend/src/features/editor/ExportDialog.spec.ts

@@ -1,12 +1,33 @@
 // @vitest-environment jsdom
 import {mount,flushPromises} from '@vue/test-utils'
-import {it,expect,vi} from 'vitest'
+import {it,expect,vi,beforeEach} from 'vitest'
 import ExportDialog from './ExportDialog.vue'
 import {apiClient} from '@/services/apiClient'
 vi.mock('@/stores/editor',()=>({useEditorStore:()=>({content:'# snapshot',currentFilePath:'note.md'})}))
 vi.mock('@/stores/theme',()=>({useThemeStore:()=>({currentThemeId:'light'})}))
 vi.mock('@/services/mermaidService',()=>({renderMermaid:vi.fn()}))
 vi.mock('@/services/apiClient',()=>({apiClient:{post:vi.fn(),get:vi.fn()}}))
+beforeEach(()=>{vi.useRealTimers();vi.clearAllMocks()})
+it('starts each dialog with no completed history while retaining active background jobs',async()=>{
+ vi.useFakeTimers()
+ vi.mocked(apiClient.get)
+  .mockResolvedValueOnce({items:[
+   {job_id:'old',status:'completed',warnings:[],error:null,file:{file_name:'old.pdf',size:1}},
+   {job_id:'active',status:'running',warnings:[],error:null,file:null},
+  ]})
+  .mockResolvedValueOnce({items:[
+   {job_id:'old',status:'completed',warnings:[],error:null,file:{file_name:'old.pdf',size:1}},
+   {job_id:'active',status:'completed',warnings:[],error:null,file:{file_name:'active.pdf',size:1}},
+  ]})
+ const wrapper=mount(ExportDialog,{global:{stubs:{AppDialog:{template:'<div><slot /></div>'}}}})
+ await flushPromises()
+ expect(wrapper.text()).not.toContain('old.pdf')
+ expect(wrapper.text()).toContain('active')
+ await vi.advanceTimersByTimeAsync(1500)
+ await flushPromises()
+ expect(wrapper.text()).toContain('active.pdf')
+ wrapper.unmount()
+})
 it('closing the dialog after submitting preserves the background export',async()=>{
  let finish!:(value:unknown)=>void
  vi.mocked(apiClient.get).mockImplementation(async(path:string)=>path==='/api/exports'?{items:[]}:{job_id:'closing-job',status:'cancelled',warnings:[],error:null,file:null})

frontend/src/features/editor/ExportDialog.vue

@@ -10,9 +10,19 @@ const format = ref<ExportFormat>('html'), page = ref('A4'), title = ref(true)
 const jobs = ref<ExportJob[]>([]), error = ref(''), preparing = ref(false)
 let timer: ReturnType<typeof setTimeout> | undefined, disposed = false
 let controller: AbortController | undefined
+const visibleJobIds = new Set<string>()
+let initialized = false
 const labels = { queued: '排队中', running: '渲染中', completed: '已完成', failed: '失败', cancelled: '已取消' }
 async function refresh() {
-  try { const value = await exportService.list(); if (!disposed) jobs.value = value } catch (e) { error.value = String(e) }
+  try {
+    const value = await exportService.list()
+    if (!initialized) {
+      // 重新打开弹窗时丢弃历史终态记录，但接回仍在后台执行的任务。
+      value.filter(job => ['queued','running'].includes(job.status)).forEach(job => visibleJobIds.add(job.id))
+      initialized = true
+    }
+    if (!disposed) jobs.value = value.filter(job => visibleJobIds.has(job.id))
+  } catch (e) { error.value = String(e) }
   if (!disposed) timer = setTimeout(refresh, 1500)
 }
 async function start() {
@@ -20,6 +30,7 @@ async function start() {
   const snapshot = editor.content, name = editor.currentFilePath?.split('/').pop()?.replace(/\.md$/i, '') ?? '笔记'
   try {
     const job = await exportService.create(snapshot, name, format.value, { theme_id: theme.currentThemeId, include_title: title.value, page_size: page.value, palette: captureExportPalette() }, controller.signal, editor.currentFilePath ?? undefined)
+    visibleJobIds.add(job.id)
     if (!disposed) jobs.value.unshift(job)
   } catch (e) { error.value = e instanceof DOMException && e.name === 'AbortError' ? '已取消导出' : String(e) }
   finally { preparing.value = false }

frontend/src/services/pdfSnapshotService.spec.ts

@@ -8,10 +8,17 @@ vi.mock('@/stores/markdownPreferences',()=>({useMarkdownPreferencesStore:()=>({n
 vi.mock('@/stores/headingAppearance',()=>({useHeadingAppearanceStore:()=>({cssVariables:{'--heading-1-size':'37px'},preferences:{custom:true}})}))
 vi.mock('@/components/common/MarkdownContent.vue',()=>({default:{}}))
 vi.mock('@/features/editor/VisualMarkdownEditor.vue',()=>({default:{__scopeId:'data-v-editor'}}))
-import {preparePdfSnapshot} from './pdfSnapshotService'
+import {preparePdfSnapshot,preferWoff2FontSource} from './pdfSnapshotService'
 import {apiClient} from './apiClient'
 import {renderMarkdown} from '@/utils/markdown'
 afterEach(()=>vi.clearAllMocks())
+it('keeps only the WOFF2 source when preparing embedded print fonts',()=>{
+ const css='@font-face { font-family: "Demo"; src: url("data:font/woff2;base64,d09GMg==") format("woff2"), url("demo.woff") format("woff"), url("demo.ttf") format("truetype"); font-style: normal; }'
+ const compact=preferWoff2FontSource(css)
+ expect(compact).toContain('url("data:font/woff2;base64,d09GMg==") format("woff2")')
+ expect(compact).not.toContain('demo.woff"')
+ expect(compact).not.toContain('demo.ttf')
+})
 it('preserves actual theme CSS, pseudo elements, root attributes and heading preferences',async()=>{
  const style=document.createElement('style');style.textContent='[data-theme="paper"] .ProseMirror::before { content:"tape"; transform:rotate(-3deg) }';document.head.append(style)
  document.documentElement.dataset.theme='paper'

frontend/src/services/pdfSnapshotService.ts

@@ -38,8 +38,31 @@ async function dataUrl(url: string, signal?:AbortSignal):Promise<string> {
   const blob=await response.blob()
   return await new Promise((resolve,reject)=>{const reader=new FileReader();reader.onload=()=>resolve(String(reader.result));reader.onerror=reject;reader.readAsDataURL(blob)})
 }
+export function preferWoff2FontSource(css:string):string {
+  if(!/^\s*@font-face\b/i.test(css))return css
+  const declaration=/\bsrc\s*:/i.exec(css)
+  if(!declaration)return css
+  const valueStart=declaration.index+declaration[0].length
+  let quote='',depth=0,valueEnd=-1
+  for(let index=valueStart;index<css.length;index+=1) {
+    const character=css[index]!
+    if(quote) {
+      if(character==='\\')index+=1
+      else if(character===quote)quote=''
+    } else if(character==='"'||character==="'")quote=character
+    else if(character==='(')depth+=1
+    else if(character===')')depth=Math.max(0,depth-1)
+    else if(character===';'&&depth===0){valueEnd=index;break}
+  }
+  if(valueEnd<0)return css
+  const sources=css.slice(valueStart,valueEnd)
+  const woff2=sources.match(/url\(\s*(?:["'][^"']*["']|[^)]*)\s*\)\s*format\(\s*["']?woff2["']?\s*\)/i)
+  return woff2 ? `${css.slice(0,valueStart)} ${woff2[0]}${css.slice(valueEnd)}` : css
+}
 async function embedCss(css: string, base: string, signal?:AbortSignal) {
   // 打印进程完全离线，主题资源必须来自应用同源地址并在此转换为 data URL。
+  // Chromium 支持 WOFF2；丢弃同一字体的 WOFF/TTF 回退，避免重复嵌入三份字体。
+  css=preferWoff2FontSource(css)
   const matches=[...css.matchAll(/url\(\s*(['"]?)(.*?)\1\s*\)/g)]
   for(const match of matches) {
     const url=match[2]!

frontend/vite.config.ts

@@ -24,6 +24,11 @@ export default defineConfig({
   },
   build: {
     manifest: true,
+    // PDF 快照运行在离线打印页中；将 Chromium 实际使用的 WOFF2 字体内联，
+    // 避免 Tauri 资源协议无法通过 fetch 转存字体而导致整次导出失败。
+    assetsInlineLimit(filePath) {
+      return /\.woff2$/i.test(filePath) ? true : undefined
+    },
     rollupOptions: {
       output: {
         // Keep lazy languages/diagrams independent; do not collect every vendor into one bundle.